Continuing coverage: UTMB virologist Nikos Vasilakis announced the recent discovery of a fifth type of dengue virus, which has cropped up in Malaysia. The discovery is not good news for virologists’ fight to curtail the spread of dengue and find viable treatment and vaccine options for the disease: With the discovery of this fifth serotype, which was announced at the third international conference on Dengue and Dengue Haemorrhagic Fever in Bangkok back in October, Vasilakis noted that an even more robust effort to contain the disease is now critical.